Razer Kraken 7.1 Chroma Sound USB Gaming Headset - 7.1 Surround Sound with Retractable Digital Microphone and Chroma Lighting Immersive in-game situational awareness through true to life positional audio via an advanced 7.1 virtual surround sound engine. Personalized audio calibration with Razers powerful Synapse configuration software enabling custom setup for each game or audio program. Full retractable advanced digital microphone boom pulls out from the ear cup as and when you need it, delivering the most pristine voice quality unachievable through traditional analog microphones. Set yourself apart with customizable Chroma lightings 16.8 million color options and amazing lighting effects. Elegant Razer design with perfect balance of weight, functionality and performance. Game all-night long with plush comfort and optimized weight for extended wear. USB connectivity for PC and Mac.